Engine.



PATENTED JUN G., 0, ROBERTSON.

ENGINE. APPLIUATIOH FILED IDEE 22, 1907.

2 SHBETS-SHBET 1.

- No. 339,859. PATETED JUNE 2, 1908.

O. 0. ROBERTSON.

ENGINE.

APPLIOATloN FILED JUNI: 22,1907.

2 SHEETSSHBET 2.

1o gin-es wherein uro employed n. wis

20 eliicieney of the engine.

ENGL'EE.

No. 889,859. Speoiczition of Letters otont. o'benl'zed June 2, i908.

Continuation of application Serial No. 295,227, flcd January 9, .1.996. This application ilerl LTune 22. lSUI.

Serial No. 380,225.

lo all whom #it may conca/rn: Ways wii'u respect to ille piston 5 and crank it i;nown blast l,x @inmunes i?. lonnnr simil. o is muli that when the piston 5 inoves SON, clin/.en oi' tno ionized Sintes, residing; et i in tho du'eviion indicated by Hu? arrow 1n Philadelphia, in tno county of Piulmlolpinn 'i i910: l, lino pivotal connection li) will be and Stilte oi' Pennsylvnnni, ilove invon'red l ron-red, nud limi. w'non ilu piston .E moves 1n Certain new and useful g llo ra-worso direcion, tlm pivotal miuineotion linpriwmuenls in Engines, of wiiioii ino 'oliowing is n. snoei 2 vwill in. lowered. iicetion. The w ming stroke of the piston is ef- Tliis invention relates lo Limi', clos-.s ol' enfecod .f tlm nrmlioziifion oi pressure to the Y l n Crnnli hond uoreo'l", us is well known, :ind during shalt and :L oonuooiion boomen ilu, piston Vio .vorknvy sroko of tile nision it moves and sinift whereby theoperation of die pi i the diri hon. indicated by the atnirovv in Lon Causes die operation oi the crank snail.. l. lust ns ino piston begins its mu-king l the pluis occupy tho position shown l, in which vposition the centers of the The object ol my iuvreutioiii is to promio 5 a snnplennd eliicient nomination ootwevn liu piston and (trank simily vv'lierony pressure;

i i, l crunkj simil'. i', the crank 7 and the pivotal against the piston in one dirne/inni will omiso l oonnoction l() nrs in. line; and, :is the iston the crank shaft to turn. more than indi' i i moves in ilu? direc. ion indicated by tie arrovolutvion, thus inoroasug the power und l row, the cross-hond l2 moves up the guidewnj s il io mise ilu pivotnl connection 10 The invention consists in' ille novel non" 2 and illus @floot (lie 'turning of the crank shaft struction and oomhiimlons ol' pars heroni i in the dum-.Lion indicated by tho orrow. after fully described ond flnimed. 2 ,ilo pressure against ilu bend of the piston 5 In the (lrawirigsz-lpiguro i is n. lon voninuos to turn tlio omni: slnift G until lie 25 dinal,Verticalsootion through nportion of nu coni. s ol' lili@ crank slnif. 6, the. crank 7 ond engine embodying my invention. Fig. 2 is pivoi'nl commotion E() ngnin onine inline, os e similar View, showing the paris in e dill'orshown in Fig. filiali illustrates the position ont posit-ion. Fig. 3 is o liorixontnl sootion, of iii-o ports :it the. completion oi" the Working i as on the line 3-3 of Fig'. 1. Fig'. 4 is o stroke of the piston. Thus it will be seen 0 transverse,y vertical section, :is ou the line limb/during the working stroke of the piston,

4-4, of Fig. 1. the shaft is turned inoro thon lmlf n. I'eVolu 1 designates the. engine immo, 2 the oyllnf tion, der, 5 tno piston, 6 the crunk shalt and 7 the An important feature of my invention 1s crank, all of wluoii :1ro of' usual und well in innii'inining the connecting orio 9 nearly 35 known construction. ond. need no detaileil parallel to ibo axis of the 'piston 5, thereby description liorein. materially 'reducing the *alii-usiy o the piston otn'mbly mounted on the crank 7 is one against the top and. bottoni of the cylinder 2 end of' on zn'ui S, the other end of which oxthat. would be 'present if the rm 9 were piv'- tends toward 'the piston 5; und pivotoily oted'to the crunk 7 in the usunl manner.

`0 oonnooaed to lille piston one ond of nu zmn l olnini l), ilie other ond ol' which extends toward '3. ln nn angine., lille combination with the ilu omni: .7 and is nivotnlj/ connected to ironie, liao omini' snnft the crunk, and the nini S, if., l0, lli l n. flexible. vonpisiion, oi :1.1i :u'in niotnlly oonneeted to che f dniou piston. piston nini inning' n. pivotal und sliding 00nluf. :nun is proi'i s on omlonsion noeiion with lie ironie, und. an mu rigidly i wuir'ii pivotnily iconuoved lo n orossi mounted on time ffmnl :md pivotally oonnectf infini i2, as ni. luis f ,ios;-;in:n.d i2 is od to the li s.; nunmal :1i-zn', whereby pressure iitnwl lo ond ndnpod iosliflo iu gruidou'ujJs i ugziinst 'l'.lio nson in ,no li1'oo;ion will nous@ i4 iu lilo immo i llio gruidowoys ibi nro no ille ci nl; tomu'n www. sluininill" nrovolution. .0 'ranged on :inning Y, nd Lim'ongieof lliegfuidow l L2. 1... roiniiinntiou 'wii/li,

frame having a guideway therein, the crank shaft the crank and the piston, of en :um `pivotally connected to the piston, an :um 13o-l tatebly mounted on the crank and pvotolly 5 connected to the I-st named arm, a crosshead tted to said guidewfty, and 1n eens oonnesting said arms with the oross-hem1whero by pressureegainst the piston in one dil'ooi 

